Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/36260
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dc.contributor.authorWang, Nen_US
dc.contributor.authorGuo, Hen_US
dc.contributor.authorJiang, Fen_US
dc.contributor.authorLing, ZHen_US
dc.contributor.authorWang, Ten_US
dc.date.accessioned2016-04-15T08:36:58Z-
dc.date.available2016-04-15T08:36:58Z-
dc.date.issued2015-
dc.identifier.citationScience of the total environment, 2015, v. 505, p. 939-951en_US
dc.identifier.issn0048-9697-
dc.identifier.urihttp://hdl.handle.net/10397/36260-
dc.description.abstractField measurements were simultaneously conducted at a mountain (Mt.) site (Tai Mao Shan, TMS) and an urban site (Tsuen Wan, TW) at the foot of the Mt. TMS in Hong Kong. An interesting event with consecutive high-ozone (03) days from 08:00 on 28 Oct. to 23:00 on 03 Nov., 2010 was observed at Mt. TMS, while no such polluted event was found at the foot of the mountain. The Weather Research and Forecasting (WRF)-Community Multiscale Air Quality (CMAQ) models were used to understand this event. Model performance evaluation showed that the simulated meteorological parameters and air pollutants were well in agreement with the observations. The index of agreement (IOA) of temperature, relative humidity, wind direction and wind speed were 0.93, 0.83, 0.46 and 0.60, respectively. The multi-day high 03 episode at Mt. TMS was also reasonably reproduced (IOA = 0.68). Horizontally, the photochemical processes determined the 03 levels in southwestern Pearl River Delta (PRD) and the Pearl River Estuary (PRE), while in eastern and northern PRD, the 03 destruction was over the production during the event. Vertically, higher 03 values at higher levels were found at both Mt. TMS and TW, indicating a vertical 03 gradient over Hong Kong. With the aid of the process analysis module, we found positive contribution of vertical transport including advection and diffusion to 03 mixing ratios at the two sites, suggesting that 03 values at lower locations could be affected by 03 at higher locations via vertical advection and diffusion over Hong Kong.en_US
dc.description.sponsorshipDepartment of Civil and Environmental Engineeringen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofScience of the total environmenten_US
dc.subjectOzone episodeen_US
dc.subjectCNIAQen_US
dc.subjectVertical ozone gradienten_US
dc.subjectVertical transporten_US
dc.subjectGas-phase chemistryen_US
dc.titleSimulation of ozone formation at different elevations in mountainous area of Hong Kong using WRF-CMAQ modelen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage939-
dc.identifier.epage951-
dc.identifier.volume505-
dc.identifier.doi10.1016/j.scitotenv.2014.10.070-
dc.identifier.isiWOS:000347654900093-
dc.identifier.scopus2-s2.0-84909942614-
dc.identifier.pmid25461095-
dc.identifier.eissn1879-1026-
dc.identifier.rosgroupid2014000501-
dc.description.ros2014-2015 > Academic research: refereed > Publication in refereed journal-
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